Make sense of photo upload requirements
A form can reject a perfectly good photo because its file size, dimensions or format do not match. Start with the requirement you need to fix.
How to compress an image to 100 KB
A step-by-step walkthrough, a tested example and what to do when your photo cannot fit.
KB versus pixels: why changing one is not enough
Read a form’s size rules correctly, preserve proportions and avoid stretching.
JPG or WebP for online forms?
Choose an accepted output format, understand transparent backgrounds and avoid extension-only conversions.
Before you change your photo
Copy the exact upload requirements from the destination website. Note the accepted formats, width and height in pixels, maximum file size and any minimum size. A limit such as “100 KB” does not tell you which dimensions to use.
SizeKit processes JPG, PNG and WebP images locally in your browser. You can set a maximum KB limit and pixel dimensions, then download a JPG or WebP result. It does not crop photos, remove backgrounds or guarantee that a destination will accept them.
Open the photo resizer